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     1 Each HSI port is supposed to have one child node, which
    2 symbols the remote device connected to the HSI port. The
    3 following properties are standardized for HSI clients:
    4 
    5 Required HSI configuration properties:
    6 
    7 - hsi-channel-ids:      A list of channel ids
    8 
    9 - hsi-rx-mode:          Receiver Bit transmission mode ("stream" or "frame")
   10 - hsi-tx-mode:          Transmitter Bit transmission mode ("stream" or "frame")
   11 - hsi-mode:             May be used instead hsi-rx-mode and hsi-tx-mode if
   12                         the transmission mode is the same for receiver and
   13                         transmitter
   14 - hsi-speed-kbps:       Max bit transmission speed in kbit/s
   15 - hsi-flow:             RX flow type ("synchronized" or "pipeline")
   16 - hsi-arb-mode:         Arbitration mode for TX frame ("round-robin", "priority")
   17 
   18 Optional HSI configuration properties:
   19 
   20 - hsi-channel-names:    A list with one name per channel specified in the
   21                         hsi-channel-ids property
   22 
   23 
   24 Device Tree node example for an HSI client:
   25 
   26 hsi-controller {
   27         hsi-port {
   28                 modem: hsi-client {
   29                         compatible = "nokia,n900-modem";
   30 
   31                         hsi-channel-ids = <0>, <1>, <2>, <3>;
   32                         hsi-channel-names = "mcsaab-control",
   33                                             "speech-control",
   34                                             "speech-data",
   35                                             "mcsaab-data";
   36                         hsi-speed-kbps = <55000>;
   37                         hsi-mode = "frame";
   38                         hsi-flow = "synchronized";
   39                         hsi-arb-mode = "round-robin";
   40 
   41                         /* more client specific properties */
   42                 };
   43         };
   44 };
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